NanoLab developed Carbon Nanotube- Carbon Fiber Veil Composite
material to create a highly scalable, low cost sheet form of our carbon nanotubes. We start with a carbon fiber veil, made up of 7-10 micron diameter fibers, and coat this sheet with our catalyst composition, using a low cost roll to roll process. We then use the In-Situ Growth process to grow carbon nanotubes on every carbon fiber in the nonwoven sheet. The resulting composite has a number of uses, and can be customized for particular applications.

A number of stock basis weights are available, and we can also process woven carbon cloth, fibrous carbon preforms like TGPH and AVcarb papers, and metal fiber mesh with the same process.

Image at right:
Carbon nanotubes grown on carbon fiber mesh, using the In-Situ-Growth (ISG) process. The apparent fiber diameter is now increased from 7 microns to ~50 microns due to the nanotube coating.

Properties

Width: up to 10” wide

Length: up to 200m rolls

Thickness: 50 microns

Basis Weight: CF 6.8g/m2Basis Weight: CNT 20g/m2

Specific Surface area: 100-150 m2/g

Resistivity: <20 ohm/sq

Porosity (Gurley): 10-1000 s/100cm3

Wettability: Hydrophobic or hydrophillic

Standard offering:
Contact us for ISG veil materials

Catalog#

CV 2

CV 8x10

CV 10x144

CV 10xR

Shape

Square

Rectangle

Rectangle

Rectangle

Size

2"x2"

8"x10"

10"x12ft

10"xRoll

thickness

~0.05mm ± 0.05mm

CNT Density

2mg/cm2

Price

$100

$800

Contact us

Contact us

Carbon fiber veil, before (left) and after CVD carbon nanotube growth

at 10,000X, the diameter of the carbon nanotubes can now be seen. Here, the nanotubes are ~10nm in diameter, and well over 20 microns in length.

Applications

1. Energy Storage
The ISG carbon nanotube nonwoven veil has a high electrical conductivity and a high surface area (~100m2/g), and can be tailored for use as electrodes materials in supercapacitors, ultracapacitors, gas diffusion electrodes, fuel cell electrodes, and battery electrodes. For data regarding this material as an electrode in supercapacitors, please review the pdf file (will come soon) This material can be customized for your product development
needs.

2. Composites
The ISG carbon nanotube veil can make an excellent conductive top layer in composite fabrication. The nanotubes impart
conductivity to the sheet, sufficient for electrostatic dissipation aka ESD, resistive heating or resistive curing of composites,
or electromagnetic interference, aka EMI shielding. The veil can be infiltrated with epoxies using standard VARTM processing or
simple vacuum bagging. Mechanically, the ISG carbon nanotube veil can boost fracture toughness and interlaminar shear strength of
composites. For data regarding the mechanical performance of these carbon fiber veils in composites, please review the pdf file
(will come soon).